Radiator Core Ass'y 601-3543 Oil Cooler
Direct Replacement for OEM Part Numbers
This oil cooler core is precision manufactured to match OEM specifications, fully compatible with part numbers 601-3543, 393-9054, 6013543, 3939054, ensuring easy and direct replacement for Caterpillar D6N, D5R2 and related machines.
Perfect Fit for Caterpillar Heavy Equipment
Designed specifically for Caterpillar D6N, D5R2, D6R series bulldozers and excavators, this oil cooler core delivers an accurate installation fit and maintains full compatibility with the original cooling system structure.
Superior Heat Dissipation Performance
Built with a high-density tube and fin structure, this oil cooler core provides exceptional heat exchange efficiency, quickly lowering engine oil temperature and maintaining stable lubrication under heavy-duty working conditions.
This Oil Cooler Core (601-3543, 393-9054) is a high-quality aftermarket replacement designed for Caterpillar D6N, D5R2, D6R heavy equipment, delivering dependable cooling performance for engine and hydraulic systems. Built with a high-efficiency tube-and-fin design and an optimized 1.3L internal volume, it ensures excellent heat dissipation, stable oil flow, and consistent lubrication under heavy-duty conditions. Precision-engineered to match OEM dimensions and specifications, it guarantees a perfect fit, easy installation, and reliable compatibility with original radiator assemblies. Featuring durable, heat-resistant construction, it supports extended equipment life, reduces overheating risks, and lowers long-term maintenance costs. Whether for construction, earthmoving, or industrial applications, this oil cooler core provides reliable performance, strong durability, and outstanding value for Caterpillar machinery owners and repair professionals.
Optimized 1.3L Internal Volume for Reliable Flow
With a standard internal volume of 1.3 liters, this oil cooler core ensures smooth oil circulation, supporting consistent cooling performance and protecting engine components from overheating and wear.
Heavy-Duty Construction for Long Service Life
Constructed from high-strength, heat-resistant materials, this oil cooler core resists cracking, corrosion, and pressure fatigue, delivering outstanding durability even in harsh construction and mining environments.
Stable and Reliable Cooling System Performance
By effectively controlling oil temperature, this oil cooler core stabilizes the entire engine cooling system, improving overall machine reliability and reducing the risk of overheating-related breakdowns.
Enhanced Engine Lubrication and Protection
By maintaining optimal oil temperature, this oil cooler core preserves oil viscosity and lubrication quality, reducing friction between engine parts and extending the service life of your equipment.
Title 8: Ideal for Demanding Working Conditions
Engineered for heavy-duty operation, this oil cooler core performs reliably in high-load, high-temperature, and long-hour working environments, making it perfect for construction and earthmoving applications.
High Compatibility with Radiator Core Assemblies
This oil cooler core integrates smoothly with original radiator core assemblies, supporting stable hydraulic and engine cooling for Caterpillar D6N, D6R and D5R2 series machines.
Cost-Effective Aftermarket Quality
As a high-quality aftermarket replacement, this oil cooler core combines reliable performance, durable construction, and competitive pricing, helping reduce maintenance costs while ensuring professional-grade functionality.




